package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.JwtClaimsConstant;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.properties.JwtProperties;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import com.sky.utils.JwtUtil;
import io.jsonwebtoken.Claims;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;


    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        password=DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     *
     * @param employeeDTO
     * @return void
     */

    @Override
    public void insert(EmployeeDTO employeeDTO) {
        //员工
        Employee employee=new Employee();

        //把employeeDTO的值赋给employee
        BeanUtils.copyProperties(employeeDTO,employee);

        employee.setPassword("123456");

        employeeMapper.insert(employee);

    }

    /**
     * 员工分页查询
     *
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult page(EmployeePageQueryDTO employeePageQueryDTO) {
        //利用pageHelper进行分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());

        Page<Employee> page = employeeMapper.page(employeePageQueryDTO);

        long total = page.getTotal();
        List<Employee> result = page.getResult();

        return new PageResult(total,result);
    }


    /**
     * 启用禁用操作
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(int status, Long id) {
        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();
        employeeMapper.update(employee);

    }

    /**
     * 根据id查询数据
     * @param id
     * @return Employee
     */
    @Override
    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);

        //通过把密码*进行覆盖，不要让密码这种重要的信息返回前端，避免发生密码泄露的问题
        employee.setPassword("**********");

        return employee;

    }

    @Override
    public void update(EmployeeDTO employeeDTO, HttpServletRequest request) {
        Employee employee=new Employee();

        BeanUtils.copyProperties(employeeDTO,employee);

        employeeMapper.update(employee);

    }

}
